Dysfluency and stuttering.
D002648:Child; D002657:Child Development; D002675:Child, Preschool; D004777:Environment; D006801:Humans; D010287:Parent-Child Relations; D013060:Speech; D013064:Speech Disorders / Q000175:diagnosis*; D013070:Speech Therapy; D013342:Stuttering / Q000175:diagnosis*; D014705:Verbal Behavior